CHENG-WEI CHIANG2018-09-102018-09-101999-09http://inspirehep.net/record/506641http://scholars.lib.ntu.edu.tw/handle/123456789/349840Improved model independent upper bounds on the weak transition form factors are derived using inclusive sum rules. A comparison of the new bounds with the old ones is made for the form factors (Formula presented) and (Formula presented) in (Formula presented) decays. © 2000 The American Physical Society.[SDGs]SDG10journal article10.1103/PhysRevD.61.057901